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dzs.cz

https://dzs.cz· First analyzed 10 May 2026· Updated 10 May 2026
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dzs.cz
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Mobile

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Hosting Provider

ACTIVE 24, s.r.o.

IP Address

81.95.108.75

Site Location

🇨🇿 Czech Republicvia phone

Server Location

🇨🇿 Prague, Czechia

ASN

AS51013

Organization

ACTIVE 24, s.r.o.

Server

Nginx

Nameservers

beta.ns.active24.cz.gama.ns.active24.sk.alfa.ns.active24.cz.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
629 ms10%
Speed Index
818 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
465 KB
78 requests

Image Optimization

Responsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Drupal

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

10 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Hotjar

Libraries

1
jQuery

Other

1
Modernizr

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

Email Marketing

1
Mailchimp

Advertising

1
LinkedIn Ads

Web Servers

1
Nginxv1.28.1

SEO Analysis

B76/100
22
6
0
Meta Tags12/15
Content11/12
Headings8/8
Technical19/25
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social5/5
Freshness2/4
Mobile3/4
Indexability3/3
D
dzs.czdzs.cz

Homepage | Dům zahraniční spolupráce

Jsme příspěvková organizace Ministerstva školství, mládeže a tělovýchovy a česká národní agentura pro mezinárodní vzdělávání.

Title Length36 chars

Recommended: 50-60 chars (~222px / 580px)

Description Length125 chars

Recommended: 120-160 chars

Issues (0)

    6 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    2 URLs

    2 sub-sitemaps

    robots.txt

    49 rules

    Local SEO

    Local Search Readiness

    16/100
    Poor
    5 11 2

    This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

    Sponsored

    AI & LLM Readiness

    D41/100
    Bot Access
    20/25
    Machine Read.
    7/25
    Schema Data
    0/25
    Citation
    14/25

    AI Bot Access

    14/14 accessible
    AI Search
    OAI-SearchBot
    PerplexityBot
    Claude-SearchBot
    Gemini-Deep-Research
    DuckAssistBot
    Training
    GPTBot
    ClaudeBot
    Google-Extended
    Meta-ExternalAgent
    Bytespiderinfo
    Amazonbot
    Applebot-Extended
    CCBotinfo
    Fetch
    ChatGPT-User

    Machine Readability

    llms.txt
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    Text ratio:8%
    Words:2,552
    Token eff.:Optimal

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary576w
    Descriptive Headingsavg 4.6w
    Canonical URL
    Open Graph2/3
    Twitter Card3/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (12)
    AI readiness recommendation preview...
    Upgrade to view recommendations

    Sponsored

    Accessibility

    WCAG 2.1 Compliance

    Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.
    B
    74/100
    14
    Passed
    3
    Critical
    2
    Warnings
    Images & Alt Text
    18/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    17/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    5/15
    Verifies form fields have labels, error messages are clear, and inputs are properly associated.
    Color & Contrast
    15/15
    Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.
    Keyboard & Focus
    11/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    8/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    2 recommendations
    • •Accessibility recommendation preview...
    Upgrade to view recommendations

    Carbon Footprint

    SWDM v4 · Eco-Score

    Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.
    66/100
    A
    47 mg
    CO₂e / view
    464.6 KB
    Page Weight
    90%
    Cleaner Than
    New Visitor
    54 mg
    vs
    Returning (cached)
    27 mg
    Annual (10K/mo)
    5.6 kg
    Emission Segments
    Data Center
    2 mg
    Network
    14 mg
    Device
    31 mg
    Resource Breakdown
    JavaScript
    231.0 KB
    Images
    115.4 KB
    CSS
    40.5 KB
    Fonts
    30.7 KB
    HTML
    16.2 KB
    Other
    30.7 KB
    Green Hosting Verified
    Websupport.sk
    GWF Verified
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    D

    Security Score

    41%Poor
    Interactive

    HTTPS

    No WAF

    72d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    ECDSA (secp256r1) (256 bit)

    Signature

    ECDSA with SHA-384

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/1.1

    Valid From

    22.04.2026

    Valid Until

    21.07.2026

    Subject Alternative Names (2)

    dzs.czwww.dzs.cz

    SHA-256 Fingerprint

    CC:00:2C:61:A5:7D:60:D3:64:C6:7D:E9:5F:56:AB:B1:47:E3:D3:AE...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🔴 No Cache(must-revalidate, no-cache, private)
    connection
    keep-alive
    content-encoding
    📦 Gzip(gzip)
    content-type
    text/html; charset=UTF-8
    content-language
    cs
    date
    Thu, 07 May 2026 13:50:01 GMT
    Good Warning Issue

    Email Infrastructure

    Microsoft 365

    Score

    70

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (1)

    dzs-cz.mail.protection.outlook.com

    Domain Information

    dzs.cz

    Domain Age
    29y 6m

    Created

    21.10.1996

    Expires

    28.10.2029

    Last Updated

    11.04.2026

    Registrar

    REG-ACTIVE24

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookiebot

    Cookie Consent Banner
    Cookiebot
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: Cookiebot
    Privacy policy page linked
    Data Protection Officer mentioned
    Legitimate interest basis mentioned

    Mobile Compatibility

    Viewport & Responsive Test

    Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.
    B
    79/100
    Mobile Friendly24 breakpoints
    Viewport Meta
    The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.
    Responsive Design
    Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.
    Touch Icons
    Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.
    Readable Font Size
    Base font size should be at least 16px on mobile to ensure text is readable without zooming.
    Relative Units
    Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.
    No H-Scroll Risk
    No elements wider than the viewport that would cause horizontal scrolling on mobile devices.
    Tap Targets OK
    Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.
    No Fixed Widths
    No elements with fixed pixel widths that could overflow on smaller screens and break the layout.
    Viewport
    width=device-width, initial-scale=1.0
    2 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Tabac Sans

    WCAG AAA
    81/100
    Readability
    /30
    18/30

    16px · LH 2.00

    Hierarchy
    /20
    20/20

    3.25x ratio · ✓ H1→H6

    WCAG
    /25
    23/25

    8.83:1 min contrast

    Performance
    /25
    20/25

    1 font · 2 req

    Heading Font

    Tabac Sans

    Sans52px

    Body Font

    Tabac Sans

    Sans16px

    Contrast Ratio

    8.83:1

    WCAG AAA (≥7:1)

    Reading Comfort

    ~38 CPL

    Narrow lines
    52px
    h1
    30px
    h2
    24px
    h3
    18px
    h4
    16px
    p

    ✅ Excellent readability: 16px body text is ideal for all devices.

    ⚠️ Wide line spacing (2.00). 1.4–1.6 is optimal for body text.

    ✅ WCAG AAA contrast: All text meets 7:1 ratio (min 8.8:1).

    ✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

    ✅ Strong hierarchy: Headlines are 3.2x larger than body text.

    ✅ Lean font stack: 1 font families keeps load times fast.

    Buy on MyFonts

    Color Palette

    7 unique colors
    14.11:1 AAA Light
    #ffffff
    Background· 68.4%
    #282c2d
    Other· 8.6%
    #ccaf93
    Primary· 5%
    #f2f0ed
    Secondary· 4.3%
    #e1d0a0
    Accent· 2.7%

    Business & Marketing Stack

    5 Tools Detected

    Enterprise

    Marketing Automation

    1
    MailchimpSMB

    Email marketing and automation platforms

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Advertising

    1
    LinkedIn AdsEnterprise

    Ad platforms and retargeting pixels

    Privacy & Cookies

    1
    CookiebotMid-Market

    Cookie consent and privacy compliance tools

    4

    Categories

    5

    Total Tools

    1

    Enterprise

    1

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Sponsored

    Scripts & Styles

    26 Resources

    20
    Scripts
    6
    Styles
    6
    Async
    0
    Defer

    Top Script Sources

    local(13)googletagmanager.com(3)consent.cookiebot.com(2)snap.licdn.com(1)tracker.metricool.com(1)

    Website Identity

    dzs.cz

    info@dzs.cz
    +420 221 850 100
    29 years old
    Location detected: 🇨🇿 Czech Republicvia phone
    REG-ACTIVE24📧 Microsoft 365cs

    Sponsored

    Last analyzed: 10 May 2026 at 01:36

    Historical Analysis & Change Tracking